Browse > Article
http://dx.doi.org/10.5370/JEET.2011.6.1.081

Thrust Performance Improvement of a Linear Induction Motor  

Lee, Hyung-Woo (Department of Vehicle Dynamics & Propulsion System Research, Korea Railroad Research Institute)
Park, Chan-Bae (Department of Vehicle Dynamics & Propulsion System Research, Korea Railroad Research Institute)
Lee, Byung-Song (Department of Vehicle Dynamics & Propulsion System Research, Korea Railroad Research Institute)
Publication Information
Journal of Electrical Engineering and Technology / v.6, no.1, 2011 , pp. 81-85 More about this Journal
Abstract
The end effect of a linear induction motor (LIM) has been known for several decades, especially in high speed operation. The exit part of the primary is not dealt as extensively as the entry part because of its minor effect. However, the exit part is one of the keys to weaken the dolphin effect, which occurs in high speed operation. In this paper, the concept of the virtual primary core is introduced, and chamfering of the primary outlet teeth is proposed to minimize the longitudinal end effect at the exit zone. For this, LIM for the high-speed train is designed and analyzed by using finite element method. Results confirm that chamfering can improve thrust performance effectively.
Keywords
End effect; Dolphin effect; LIM; Linear motor; Virtual primary core;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 4
Times Cited By SCOPUS : 0
연도 인용수 순위
1 A. H. Selcuk and H. Koeroem, "Investigation of end effects in linear induction motors by using the finiteelement method," IEEE Trans. Magnetics, Vol. 44, No. 7, pp. 1791-1795, 2008.   DOI   ScienceOn
2 R. C. Creppe, J. A. C. Ulson and J. F. Rodrigues, "Influence of design parameters on linear induction motor end effect," IEEE Trans. Energy conversion, Vol. 23, No. 2, pp. 358-362, 2008.   DOI   ScienceOn
3 H. Mosebach, "The effects of finite length and width in linear induction motors for both the short primary and the short secondary types," Ph.D dissertation (in German), Technical University of Braunschweig, Germany, 1972.
4 H. Lee, C. Park, B. Lee and H. Park, "Exit End Effect Reduction of a Linear Induction Motor for the Deepunderground GTX," will be presented in ICEM, 2010.
5 Sakae Yamamura, "Theory of linear induction motors," University of Tokyo Press, 1978.
6 I. Boldea and S. A. Nasar, "Linear motion electromagnetic devices," Taylor & Francis, 2001.
7 Korea Railroad Research Institute, "Linear Electric Railway System," pp. 1-8, 2007.
8 Japan Subway Association, "Linear Metro System," pp. 1-28, 2004.
9 T. Hirasa, S. Ishikawa and T. Yamamuro, "Equivalent circuit of linear induction motors with end effect taken into account," Electrical Engineering in Japan, Vol. 100, No. 2, pp. 65-71, 1980.   DOI
10 J. F. Gieras, G. E. Dawson and A. R. Eastham, "A new longitudinal end effect factor for linear induction motors," IEEE Trans. Energy Conversion, Vol. EC-2, No. 1, pp. 152-159, 1987.   DOI   ScienceOn
11 Y. Mori, S. Torii and D. Ebihara, "End effect analysis of LIM based on the wavelet transform technique," IEEE Trans. Magnetics, Vol. 35, No. 5, pp. 3739-3741, 1999.   DOI   ScienceOn
12 N. Fujii and T. Harada, "A new viewpoint of end effect of linear induction motor from secondary side in ladder type model," IEEE Trans. Magnetics, Vol. 35, No. 5, pp. 4040-4042, 1999.   DOI   ScienceOn
13 T. Higuchi, S. Nonaka and M. Ando, "On the design of high-efficiency linear induction motors for linear metro," Electrical Engineering in Japan, Vol. 137, No. 2, pp. 36-43, 2001.   DOI   ScienceOn
14 N. Fujii, T. Harada, Y. Sakamoto and T. Kayasuga, "A compensation method for the end effect of a linear induction motor," Electrical Engineering in Japan, Vol. 143, No. 3, pp. 58-67, 2003.   DOI   ScienceOn
15 N. Fujii, T. Kayasuga and T. Hoshi, "Simple end effect compensator for linear induction motor," IEEE Trans. Magnetics, Vol.38, No.5, pp.3270-3272, 2002.   DOI   ScienceOn
16 J. Jamali, "End effect in linear induction and rotating electrical machines," IEEE Trans. Energy conversion, Vol. 18, No. 3, pp. 440-447, 2003.   DOI   ScienceOn
17 Hyung-Woo Lee, Sung Gu Lee, Chanbae Park and Hyun-June Park, "Characteristic Analysis of a Linear Induction Motor for a Lightweight Train according to Various Secondary Schemes," International Journal of Railway, Vol. 1, No. 1, pp. 6-11, 2008.   과학기술학회마을
18 Hyung-Woo Lee, Ki-Chan Kim and Ju Lee, "Review of maglev train technologies," IEEE Trans. Magnetics, Vol. 42, No. 7, pp. 1917-1925, 2006.   DOI   ScienceOn